Self-filling fountain-pen



P. H. QUALIVIANN.

SELF I ILLING FOUNTAIN PEN.

APPLICATION FILED JUNE 1. 1920.

Patented June 14, 1921.

INVENTOR.

I v W; &N wH Q ww I r lr 7 member 3 has aforced fit.

m'eInber 3 carries the pen UNITED STATES PATENT OFFICE.

PAUL H. QUALMANN, or MILWAUKEE, WISCONSIN. i

SELF-FILLING FOUNTAIN-PEN.

Application filed June 1,

To all whom it may concern.

Be it known that I, PAUL H. QUALMANN, a citizen of the UnitedStates,.residing at Milwaukee, county of Milwaukee, and State ofWisconsin, have invented new and useful Improvements in Self-FillingFountain- Pens, of which the following is a specification.

. ble for such purposes. It is therefore an ob ject of this invention toprovide a self filling fountain pen which may be readily manipulated byone hand of the operator leaving the other hand free.

()t-her objects of this invention are to provide a self filling fountainpen which may be operated in a convenient manner from the end of the penas distinguished from a fountain pen which has to be filled bymanipulation of a lever at the side of the pen, and to provide lockingmeans for locking the operating mechanism against accidental motion.

Other objects are to provide a self filling fountain pen of extremesimplicity which may therefore be made at minimum cost; to provide aself filling fountain pen which is composed of a minimum number ofparts; and to provide'a self filling fountain pen in which the tube iscollapsed throughout its entire length thereby producing a maximumfilling of the pen.

In the drawings:

Figure 1 is a longitudinal view partly in section of the fountain penshowing the tube in expanded position.

ig. 2 is a similarview showing the'tube in collapsed position.

Fig. 3 is a detail of the spring arms. and bearing plates.

Fig. 4 is a sectional view of the cap for the upper end of the fountainpen.

' ig. 5 is a section on the line 5--5 of Fig. 1.

The end cap which is used to, cover, the

, pen point when not in use has been omitted from the drawings for thesake of clearness.

The-body 1 of the pen is provided with a tapered opening 2 in. which thetapered end This tapered'end point and assof Specification of LettersPatent.

ciatcd parts.

Patented June 14, 1921. 1920. Serial No. 385,445.

The tapered end member terminates in a shoulder 4 and a nipple 5 uponwhich latter is secured the collapsible tube 6. The upper end of thebody 1 is closed by means of a cap 7 which has threaded engagement withthe body portion 1. The cap 7 carries a't'humb operated plunger 8 whichprojects outwardly through an opening 9 in the cap under normalconditions. The plunger 8 has an enlarged cylindrical portion 10 uponits inner end which slides within the cylindrical inner" portion of thecap 7 and in its outward position seats upon the shoulder 11 of the cap7. This portion 10 carries a pin 12 which seats within a bayonet slot 13when in-extended position. Vhen it is desired to press the plungerinwardly. it is given a partial turn so that the pin 12 moves first inthe horizontal portion of the bayonet slot andfinally arrives in thevertical portion of the bayonet slot. In this position, the plunger isadapted to be pressed inwardly by the thumb of the operator.

The mechanism for transforming the longitiulinal motion of the plunger 8into the lateral motion for collapsing the tube 6 comprises a pair ofspring arms 14 which extends substantially the full length of the bodyof the pen, the free ends 15 seating against the shoulder 4, and theyoke portion 16 being positioned adjacent the enlargement 10 of theplunger 8. These spring members 14, it will be noted from Fig. 1, arebowed inwardly to a slight extent in normal position so that anypressure exerted longitudinally .of the pen tending to shorten thedistance between the yoke 16 and the ends 15 results in causing theapproach of the central portions of the spring arms 14 as shown in Fig.2. This motion of the spring arms 14 clamps the tube 6 between them, butsuch clampingaction, if applied directly to the tube, would be 'overonly a limited area of the tube.- In order to enhance the effect of thisclamping action,'a pair' of rigid plates 17 are positioned one upon eachside of the tube andare arranged to extend substantially the tube,thereby causingthetube to be contracted throughout tire length. Theseplates 17 are held in' position upon the spring arms 14 by means of apair of ears 18 formed integrally with the plates and bent about thespring arms 14 adjacentthe central portion thereof.

The locking action secured by the cothe entire length r of substantiallyits en- 35 from inadvertent discharge thereafter.

operation of the pin 12 and the bayonet slot 13 is effective against alongitudinal accidental motion of the plunger 8. However, to guardagainst an accidental twisting mo- 5 'tion of the plunger 8 which woulddisengage the pin from the horizontal portion of the bayonet slot,additional means are provided as shown in Fig. 4:. The horizontalportion of the bayonet slot is provided with an en- 10 largem'ent 19which is in the nature of a semi-circular recess 19 which extendsoutwardly from th inner end of the horizontal portionof the bayonetslot. It will thus be seen that when the plunger 8 is given a rotarymotion for a portion of the turn, the

pin 12 will travelalong the horizontal portion of the bayonet slot andthe pressure of the spring 14 will force the yoke 16 against theenlargement 10 and will thereby seat the -2 pin 12 within the recess 19,thereby securing the plunger 8 against accidental rotary disengagingmotion.-

It will be noted that a self filling fountain pen has been provided-inwhich the tube is 2 collapsed throughout its extent during the fillingoperation and in which extremely simple means have been provided foraccomplishing this result. It will also be 7 noted that manipulation ofthe fountain pen during filling operation may be made the pen and suchmeans are not complicated or difiicult of manipulation or of assemblybut are design.

I claim: 1. A self filling fountain pen comprising a of extremely simpleand eflicient '4 pen carrying portion, a' collapsible tube mountedthereon, a cylindrical body surrounding said tube, and means extendingoutwardly from'the' top portion of the pen for collapsing saidtube,:said means arranged to be locked in one position of adjustment,

said means adapted to collapse said tube when given a longitudinalmotion.

2. A self filling fountain pen comprising a body portion, a collapsibletube mounted therein, an elongated U-shaped spring mem ber having itsarms positioned upon opposite sides of said tube, and means extendingoutwardly'from' said body portion for causing x v the simultaneousinward bowing of sai 6Q spring arms to thereby collapse said tube.

,3. A "self filling fountain pen comprising a body portion, acollapsible tube mounted therein, an elongated-U-shaped spring memberhaving its arms positioned upon opposite sides of said tube,plates-mounted upon opposite sides of said tube between said tube andsaid spring arms, and means extending outwardly from said body tosimultaneously bow said spring arms and thereby cause said plates tocollaps said tiibe.

4. A self filling fountain pen comprising a. body, a tube mounted withinsaid body, an

taneous motion of said plates to collapse said tube.

5. A self filling fountain pen comprising a body, a tube mounted withinsaid body, an elongated U-shaped spring membermounted within said bodyand having its arms positioned upon opposite sides of said tube, platesmounted upon said spring arms and arranged to bear upon opposite sidesof said tube, and a plunger pro'ecting from the upper end of said bodyan arranged to have motion of rotation and translation 6; A selffillingfountain pen comprising a cylindrical body portion, acollapsibleink tube mounted therein, an elongated U- shapcd springmember having its arms initially bowed inwardly and positioned withinsaid cylindrical body and upon opposite. sides of said tube, platesmounted between saidarms and said tube and carried by said arms, a capsecured upon the upper end of said cylindrical body and provided with abayonet slot, a plunger mounted within said cap and having a pin adaptedto travel within said bayonet .slot, thereby temporarily locking saidplunger in one position, said plunger being adapted to bear upon theyoke portion of said elongated U-shaped spring member and causethelapproach of an intermediate portion of said spring arms,

thereby'causingsaid'plates to collapse said ink tube.

7. A self filling fountain pen comprising a body portion, a. tubemounted withim said body portion, an elongated U-shaped spring memberhaving its arms initially bowed toward each other, and positioned uponopposite sides of said'tube, and a plunge-r adapted to cause said armsto approach each other and collapse said tube, said body portion havinga bayonet slot adjacent said plunger with an outwardly extending recessat its outer end and a pin carried by said plunger and adapted tocooperate with said bayonet slot and to be finally seated in lockedposition within said recess.

In testimony whereof I affix my signature in the presence of twowitnesses.

PAUL H. QUALMA'NN.

Witnesses:

AR'IVW. Mmnow, A. R. WooLFoLx, Jr.

